Question

Crossing-over involves the exchange of genetic information between

Answer 1

Okay! its saying [Homologous chromosomes that occurs during meiosis]Right?
Means in Phases of meiosis.
I googled and found!
that
Meiosis 1:
Prophase I - homologous chromosomes are paired up tightly into tetrads, then crossing over, the exchange of genetic material between the DNA in these tetrads occurs, forming a chiasmata, an x-shaped structure.
Metaphase I - paired chromosomes line up along the equator of a cell, the metaphase plate as the spindle microtubulue apparatus pulls them.
Anaphase I - The spindle microtubules pull homologous chromosomes to opposite sides of the cell, causing them to separate.
Telophase I - The spindle microtubule appartus begins to disappear/disintegreate, the nucleus membrane reforms around chromosomes
Cytokenesis I - The cell divides along the equator, creating 2 haploid daughter cells

A brief period of Interphase usually occurs between Meisois I and II, in which the cell grows, and DNA is replicated to prepare for meiosis.
Meiosis 2:
Prophase II - sister chromatids pair up and attach to the spindle microtubule apparatus.
Metaphase II - sister chromatids line up at equator of cell due to the movement of the spindle microtubule apparatus.
Anaphase II - sister chromatids separate as spindle fibers pull them in opposite directions.
Telophase II - sister chromatids are on opposite sides of cell, spindle fibers disappear.
Cytokenesis II - cell divides along the equator, nuclei begin to reform, creating 4 daughter haploid cells.

According to these informations! What I figured out is.. they're asking about homologous chromosome and crossing over and it's only in meiosis 1...see
Meiosis 1:
Prophase I - homologous chromosomes are paired up tightly into tetrads, then crossing over, the exchange of genetic material between the DNA in these tetrads occurs, forming a chiasmata, an x-shaped structure.

Does that makes sense? :/
So it should be [4]